Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Aerospace Technology and Management (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100304 |
Resumo: | ABSTRACT Ethylene-propylene-diene elastomer (EPDM) is employed as thermal insulation for rocket motors, as well as EPDM blends with ethylene vinyl acetate (EVA) have been used in the aerospace industry. The quantification of these blends is more common using Fourier Transform Infrared Spectrometry (FT-IR) by transmission mode, but without discussing sample preparation and methodology error. Considering this fact, a methodology was developed for determining EVA content in binary blend with EPDM samples, by Universal Attenuated Total Reflection (UATR) technique, associated to thermogravimetric analysis (TGA). This last one, it was applied to determine Vinyl Acetate (VA) content in EVA and to identify differences between EPDM/EVA blends. Samples of the analyzed blends showed two VA contents and five proportions of EPDM/EVA: 90/10, 70/30, 50/50, 30/70, and 10/90. The carbonyl stretching vibration band C=O at 1740 cm-1 was used as analytical band in FT-IR quantification. Finally, the results presented excellent accuracy with a good linear correlation coefficient (R > 0.940) and with relative error values lower than 2%, respecting the precision limits of the FT-IR spectrometer. |
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Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared SpectrometryEPDMEVAFT-IRQuantificationTGAABSTRACT Ethylene-propylene-diene elastomer (EPDM) is employed as thermal insulation for rocket motors, as well as EPDM blends with ethylene vinyl acetate (EVA) have been used in the aerospace industry. The quantification of these blends is more common using Fourier Transform Infrared Spectrometry (FT-IR) by transmission mode, but without discussing sample preparation and methodology error. Considering this fact, a methodology was developed for determining EVA content in binary blend with EPDM samples, by Universal Attenuated Total Reflection (UATR) technique, associated to thermogravimetric analysis (TGA). This last one, it was applied to determine Vinyl Acetate (VA) content in EVA and to identify differences between EPDM/EVA blends. Samples of the analyzed blends showed two VA contents and five proportions of EPDM/EVA: 90/10, 70/30, 50/50, 30/70, and 10/90. The carbonyl stretching vibration band C=O at 1740 cm-1 was used as analytical band in FT-IR quantification. Finally, the results presented excellent accuracy with a good linear correlation coefficient (R > 0.940) and with relative error values lower than 2%, respecting the precision limits of the FT-IR spectrometer.Departamento de Ciência e Tecnologia Aeroespacial2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100304Journal of Aerospace Technology and Management v.11 2019reponame:Journal of Aerospace Technology and Management (Online)instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA)instacron:DCTA10.5028/jatm.v11.986info:eu-repo/semantics/openAccessRigoli,Paulo SantosMurakami,Lídia Mattos SilvaDiniz,Milton FariaAzevedo,Margarete Ferreira PrataCassu,Silvana NavarroMattos,Elizabeth da CostaDutra,Rita de Cássia Lazzarinieng2019-01-03T00:00:00Zoai:scielo:S2175-91462019000100304Revistahttp://www.jatm.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||secretary@jatm.com.br2175-91461984-9648opendoar:2019-01-03T00:00Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA)false |
dc.title.none.fl_str_mv |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
title |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
spellingShingle |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry Rigoli,Paulo Santos EPDM EVA FT-IR Quantification TGA |
title_short |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
title_full |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
title_fullStr |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
title_full_unstemmed |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
title_sort |
Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry |
author |
Rigoli,Paulo Santos |
author_facet |
Rigoli,Paulo Santos Murakami,Lídia Mattos Silva Diniz,Milton Faria Azevedo,Margarete Ferreira Prata Cassu,Silvana Navarro Mattos,Elizabeth da Costa Dutra,Rita de Cássia Lazzarini |
author_role |
author |
author2 |
Murakami,Lídia Mattos Silva Diniz,Milton Faria Azevedo,Margarete Ferreira Prata Cassu,Silvana Navarro Mattos,Elizabeth da Costa Dutra,Rita de Cássia Lazzarini |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Rigoli,Paulo Santos Murakami,Lídia Mattos Silva Diniz,Milton Faria Azevedo,Margarete Ferreira Prata Cassu,Silvana Navarro Mattos,Elizabeth da Costa Dutra,Rita de Cássia Lazzarini |
dc.subject.por.fl_str_mv |
EPDM EVA FT-IR Quantification TGA |
topic |
EPDM EVA FT-IR Quantification TGA |
description |
ABSTRACT Ethylene-propylene-diene elastomer (EPDM) is employed as thermal insulation for rocket motors, as well as EPDM blends with ethylene vinyl acetate (EVA) have been used in the aerospace industry. The quantification of these blends is more common using Fourier Transform Infrared Spectrometry (FT-IR) by transmission mode, but without discussing sample preparation and methodology error. Considering this fact, a methodology was developed for determining EVA content in binary blend with EPDM samples, by Universal Attenuated Total Reflection (UATR) technique, associated to thermogravimetric analysis (TGA). This last one, it was applied to determine Vinyl Acetate (VA) content in EVA and to identify differences between EPDM/EVA blends. Samples of the analyzed blends showed two VA contents and five proportions of EPDM/EVA: 90/10, 70/30, 50/50, 30/70, and 10/90. The carbonyl stretching vibration band C=O at 1740 cm-1 was used as analytical band in FT-IR quantification. Finally, the results presented excellent accuracy with a good linear correlation coefficient (R > 0.940) and with relative error values lower than 2%, respecting the precision limits of the FT-IR spectrometer. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100304 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462019000100304 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5028/jatm.v11.986 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Departamento de Ciência e Tecnologia Aeroespacial |
publisher.none.fl_str_mv |
Departamento de Ciência e Tecnologia Aeroespacial |
dc.source.none.fl_str_mv |
Journal of Aerospace Technology and Management v.11 2019 reponame:Journal of Aerospace Technology and Management (Online) instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA) instacron:DCTA |
instname_str |
Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
instacron_str |
DCTA |
institution |
DCTA |
reponame_str |
Journal of Aerospace Technology and Management (Online) |
collection |
Journal of Aerospace Technology and Management (Online) |
repository.name.fl_str_mv |
Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
repository.mail.fl_str_mv |
||secretary@jatm.com.br |
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1754732532011630592 |